BellSense: Intelligent Coach

Your coach now reads every session and tells you what it means, then what to do today. Programs that adapt to how you perform and recover. Free to start on your phone.

BellSense is a kettlebell coach. The app gives you the program, you log the work, and the next session adapts to what you actually did. A sensor for the bell comes next, so the coach can measure your reps instead of taking your word for them.

How the coaching works, with just your phone Pick a program. Each session tells you exactly what to do. You log your sets and rate how each one felt, and BellSense reads everything you give it: reps, effort ratings, training volume, heart rate if you wear a monitor, and sleep, HRV, and resting heart rate through Apple Health, combined into a daily readiness score. Then it makes the call a coach would make: add, hold, or back off. Progression is decided by your results and your recovery, not by a calendar.

You can also just ask the coach what to train. It reads your recent sessions and how recovered you are, recommends one session, and tells you why it picked that one. You can see the other options it weighed, or ignore it and train what you want.

All of that is free and stays free. No sensor required.

Training programs Structured programs that run from weeks to months, from beginner kettlebell foundations to advanced power and density work. Each comes with detailed warm-ups, cool-downs, and accessory work that supports the main lifts. Thirteen programs are free; the rest are part of BellSense+.

Supported exercises Kettlebell ballistic: swing, snatch, clean Kettlebell grind: goblet squat, one-arm row, overhead press Kettlebell stability: Turkish get-up, windmill Barbell: back squat, bench press, deadlift, press, row Cardio: Log any cardio modality, track HR zone with Cardio Mode Barbell lifts are logged, scored, and tracked alongside the kettlebell work. The structured programs are kettlebell. Log any exercise for volume tracking, BellSense will save your info and incorporate it into the coaching.

Workout modes • Individual: one exercise, tracked round by round • Alternating: two or three exercises paired and rotated each round • Complex: several exercises chained back to back, tracked as one session

After every session • The coach's read on how the session went, tied to your own data • The progression call for next time: add, hold, or back off • Volume and trend charts that build week over week

The bell sensor BellSense started as a small sensor that mounts on the kettlebell and streams motion data to your iPhone. It is in development and not for sale yet, and the app does not need it. When it ships, the same coach runs on measured reps instead of logged ones: verified rep counting, speed retention across a set, reps in reserve, and live cues while you work. It learns a personal movement baseline for each lift, reads whether fatigue is skill-limited or conditioning-limited, and reports speed and power as relative indices rather than lab-grade numbers.

BellSense+ An optional subscription. It adds the rest of the program catalog and every new program as it ships, multi-week training-load and trend analytics, weekly challenges, and your own training groups. The free tier stays free.

• BellSense+ Monthly — $9.99 per month • BellSense+ Annual — $79.99 per year

Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically at the same price unless it is canceled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours of the end of the current period. Manage or cancel your subscription in your App Store account settings. Prices are in US dollars and may vary by region.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bellsense.app/privacy

What you need • An iPhone and a kettlebell. Programs, progression, and logging are free. • Optional: a heart rate monitor, and Apple Health for recovery and readiness. • No sensor. The app never requires one.

Simple tools, serious work. Lift with intention. BellSense keeps you honest.